Technical data

288 Agilent Infiniium 90000 Series Oscilloscopes Programmer's Reference
16 Function Commands
:FUNCtion<N>:VERTical 325
:FUNCtion<N>:VERTical:OFFSet 326
:FUNCtion<N>:VERTical:RANGe 327
The FUNCtion subsystem defines functions 1 - 4. The operands of these
functions can be:
• Any of the installed channels in the oscilloscope (see page 288)
• Differential channels or common mode channels (see page 288)
• Waveform memories (see page 289)
• Functions (see page 289)
• A constant (see page 289)
• Jitter measurement trend or jitter spectrum (see page 289)
You can control the vertical scaling and offset functions remotely using the
RANGe and OFFSet commands in this subsystem. You can obtain the
horizontal scaling and position values of the functions using the
:HORizontal:RANge? and :HORizontal:POSition? queries in this subsystem.
If a channel is not on but is used as an operand, that channel will acquire
waveform data.
If the operand waveforms have different memory depths, the function uses
the shorter of the two.
If the two operands have the same time scales, the resulting function has
the same time scale. If the operands have different time scales, the
resulting function has no valid time scale. This is because operations are
performed based on the displayed waveform data position, and the time
relationship of the data records cannot be considered. When the time scale
is not valid, delta time pulse parameter measurements have no meaning,
and the unknown result indicator is displayed on the screen.
Constant operands take on the same time scale as the associated
waveform operand.
Channel
Operands
CHANnel<N>, where N is an integer, 1 - 4.
Differential and
Common Mode
Channel
Operands
DIFFerential<P>, where P is an integer, 1 - 2.
COMMonmode<P>, where P is an integer, 3 - 4.
The COMMonmode and DIFFerential sources are just aliases that can be
used in place of the channel names to apply to differential or common
mode signals. These are just aliases - no state change occurs if you refer
to a differential channel and you are not in differential mode.